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Influence of Na2CO3 as Additive on Direct Reduction of Boron-bearing Magnetite Concentrate
Li, Yong-li1,2; Qu, Jing-kui1,2; Wei, Guang-ye1,2; Qi, Tao1,2
2016-02-01
Source PublicationJOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN1006-706X
Volume23Issue:2Pages:103-108
Abstract

Boron-bearing magnetite concentrate is typically characterized by low grade of iron and boron (w(TFe) = 51%-54%, w(B2O3) = 6% - 8%), as well as the close intergrowth of ascharite phase and magnetite phase. A promising technology was proposed to separate iron and boron by coupling the direct reduction of iron oxides and Na activation of boron minerals together. The influence of Na2CO3 as additive on the direct reduction of boron-bearing magnetite was studied by chemical analysis, kinetic analysis, XRD analysis and SEM analysis. The results showed that the addition of Na2CO3 not only activated boron minerals, but also reduced the activation energy of the reaction and promoted the reduction of iron oxides. Besides, the addition of Na2CO3 changed the composition and melting point of non-ferrous phase, and then promoted the growth and aggregation of iron grains, which was conducive to the subsequent magnetic separation. Thus, the coupling of the two processes is advantageous.

KeywordLudwigite Kinetic Analysis Direct Reduction Magnetic Separation Sodium Carbonate
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
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Indexed BySCI
Language英语
WOS KeywordMetallic Iron ; Ludwigite Ore ; Carbon ; Separation ; Atmosphere ; Mechanisms ; Hematite ; Pellets ; Oxides
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China(51304181) ; National Science Foundation for Distinguished Young Scholars of China(51125018)
WOS IDWOS:000371375400004
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20652
Collection研究所(批量导入)
Corresponding AuthorQi, Tao
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li, Yong-li,Qu, Jing-kui,Wei, Guang-ye,et al. Influence of Na2CO3 as Additive on Direct Reduction of Boron-bearing Magnetite Concentrate[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2016,23(2):103-108.
APA Li, Yong-li,Qu, Jing-kui,Wei, Guang-ye,&Qi, Tao.(2016).Influence of Na2CO3 as Additive on Direct Reduction of Boron-bearing Magnetite Concentrate.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,23(2),103-108.
MLA Li, Yong-li,et al."Influence of Na2CO3 as Additive on Direct Reduction of Boron-bearing Magnetite Concentrate".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 23.2(2016):103-108.
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